<template>
	<div class="banner">
		<!-- 侧导航栏的隐藏菜单 -->
		<div :class="[{'default' : show},'slider']">
			<p>
				<router-link to="/">登录</router-link> / <router-link to="/">注册</router-link>
			</p>
			<!-- 搜索 -->
			<form class="search">
				<i class="iconfont">&#xe633;</i>
				<input type="text" value="泰国" />
			</form>
			<ul>
				<li v-for="item in menus" :key="item.id">
					<router-link :to="item.url">{{item.name}}</router-link>
				</li>
			</ul>
		</div>
		<!-- 主界面 -->
		<div class="main">
			<!-- 顶部 -->
			<div class="banner-top">
				<!-- 城市切换 -->
				<div class="city">
					<router-link to="/city">
						<label>
							{{cityName}}
						</label><i class="iconfont">&#xe601;</i>
					</router-link>
				</div>
				<!-- 搜索 -->
				<form class="search">
					<i class="iconfont">&#xe633;</i>
					<input type="text" placeholder="泰国" />
				</form>
				<!-- 导航按钮 -->
				<p class="slider-btn" @click="getshow()">
					<i class="iconfont">&#xe60c;</i>
				</p>
			</div>
			
			<!-- 轮播区域 -->
			<div class="swiper banner-swiper">
			 <ul class="swiper-wrapper">
			        <li class="swiper-slide">
						<img src="@/assets/img/1.jpg" />
					</li>
			        <li class="swiper-slide">
						<img src="@/assets/img/2.jpg" />
					</li>
			        <li class="swiper-slide">
						<img src="@/assets/img/3.jpg" />
					</li>
					<li class="swiper-slide">
						<img src="@/assets/img/4.jpg" />
					</li>
					<li class="swiper-slide">
						<img src="@/assets/img/5.jpg" />
					</li>
				</ul>
			    <div class="swiper-pagination"></div><!--分页器。如果放置在swiper外面，需要自定义样式。-->
			</div>
		</div>
	</div>
</template>

<script>
	//引入辅助函数
	import {mapState} from 'vuex'
	//1.引入vue周期函数
	import {onMounted} from 'vue'
	//2.引入swiper动态组件
	import Swiper ,{
		Autoplay,
		EffectCoverflow,
		EffectCube,
		Pagination
	} from 'swiper'
	//3.说明swiper组件应用配置
	Swiper.use([Autoplay,EffectCoverflow,EffectCube,Pagination])
	
	
	//导出
	export default{
		name:'Banner',
		props:['propsbanner'],
		data(){
			return{
				menus : [],
				show:false
			}
		},
		computed:{
			//接收state内部的cityName变量
			...mapState(['cityName']),
		},
		watch:{
			propsbanner(){
				this.menus = this.propsbanner
			}
		},
		methods:{
			getshow(){
				this.show = !this.show
			}
		},
		//4.设置应用swiper的位置以及具体操作
		setup(){
			onMounted(	()=>{
				new Swiper('.banner-swiper',{
					//循环播放
					loop:true,
					//设置分页器效果
					pagination :{
						el:'.swiper-pagination'
					},
					//设置播放项：时间，不停止   手指经过不暂停自动
					autoplay :{
						delay: 3000,
						stopOnLastSlide: false,
						disableOnInteraction: true,
					}
				})
			})
		}
	}
</script>

<style scoped>
	/* 侧导航栏样式 */
	.slider{
		position: absolute;
		left: -6.6rem;
		top: 0;
		z-index: 6;
		background-color: rgba(62,62,62,0.9);
		height: 100%;
		width: 6.6rem;
		transition: all 1s;
	}
	/* 动画选择器 */
	.default{
		left: 0;
		transition: all 1s;
	}
	.slider a{
		text-decoration: none;
		color: white;
	}
	.slider p{
		line-height: 1.3rem;
		text-align: right;
		padding-right: 0.3rem;
		color: white;
		font-size: 0.35rem;
	}
	.slider .search{
		background-color: #3a3a3a;
		border-radius: 0.1rem;
		overflow: hidden;
		line-height: 0.8rem;
		width: 90%;
		margin: 0.3rem auto;
	}
	.slider .search i{
		display: inline-block;
		height: 100%;
		font-size: 0.45rem;
		padding-left: 0.2rem;
		vertical-align: middle;
		color: white;
	}
	.slider .search input{
		background-color: #3a3a3a;
		border: none;
		width: 80%;
		line-height: 0.8rem;
		text-indent: 1em;
		color: white;
	}
	.slider ul{
		margin: 0.5rem auto 0;
		width: 95%;
	}
	.slider ul li{
		line-height: 1.3rem;
		text-align: left;
		text-indent: 1em;
		font-size: 0.32rem;
		border-top: 0.04rem solid black;
	}
	.slider ul li a{
		display: block;
	}
	.slider ul li:last-child{
		border-bottom:0.04rem solid black ;
	}
	/* 主界面样式 */
	.main{
		position: relative;
		width: 100%;
		height: 5.6rem;
	}
	/* 顶部样式 */
	.banner-top{
		position: absolute;
		left: 0;
		top: 0.3rem;
		z-index: 5;
		display: flex;
		align-items: center;
		justify-content: space-between;
		width: 100%;
		height: 0.8rem;
	}
	.banner-top .city label{
		color: white;
		font-size: 0.35rem;
		padding-left: 0.3rem;
	}
	.banner-top .city .iconfont{
		color: white;
		padding-right: 0.3rem;
	}
	.banner-top .city i{
		vertical-align: middle;
		padding-left: 0.1rem;
	}
	.banner-top .search{
		flex: 1;
		background-color: white;
		border-radius: 0.1rem;
		overflow: hidden;
		line-height: 0.8rem;
	}
	.banner-top .search i{
		display: inline-block;
		height: 100%;
		font-size: 0.45rem;
		padding-left: 0.2rem;
		vertical-align: middle;
	}
	.banner-top .search input{
		border: none;
		width: 80%;
		height: 0.8rem;
		text-indent: 1em;
		vertical-align: middle;/* 垂直居中 */
	}
	.banner-top .slider-btn{
		color: white;
		padding-left: 0.4rem;
		padding-right: 0.3rem;
		line-height: 0.8rem;
		vertical-align: middle;
	}
	/* 轮播区域样式 */
	.banner-swiper{
		width: 100%;
		height: 5.6rem;
	}
	.banner-swiper img{
		width: 100%;
		height: 100%;
	}
	/* 穿透 */
	.swiper-pagination :deep(.swiper-pagination-bullet-active){
		background-color:white;
	}
</style>
